Clarissa Martinez, director of immigration for the National Council of La Raza, leads the crowd outside the Supreme Court in a chant against the Arizona law. (Emily Wilkins/Houston Chronicle) (Emily Wilkins/Houston Chronicle) less

Clarissa Martinez, director of immigration for the National Council of La Raza, leads the crowd outside the Supreme Court in a chant against the Arizona law. (Emily Wilkins/Houston Chronicle) (Emily ... more

Clarissa Martinez, director of immigration for the National Council... Photo-3736705.52453 - SFGate

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Showdown day at the Supreme Court over the Arizona immigration law. (AP photo) (The Associated Press)

Showdown day at the Supreme Court over the Arizona immigration law. (AP photo) (The Associated Press)

Showdown day at the Supreme Court over the Arizona immigration law.... Photo-3736706.52453 - SFGate

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Taboola Gallery Frame Item-85307.52453 - SFGate

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Thousands of immigrant rights advocates pack the National Mall during an immigration reform rally in Washington, Sunday, March 21, 2010. (AP Photo) (AP)

Thousands of immigrant rights advocates pack the National Mall during an immigration reform rally in Washington, Sunday, March 21, 2010. (AP Photo) (AP)

A supporter of the Arizona Immigration Law stands outside of the Supreme Court in Washington, D.C. in April 2012 (MANDEL NGAN/ Getty)

A supporter of the Arizona Immigration Law stands outside of the Supreme Court in Washington, D.C. in April 2012 (MANDEL NGAN/ Getty)

A supporter of the Arizona Immigration Law stands outside of the... Photo-3736710.52453 - SFGate

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Taboola Gallery Frame Item-85307.52453 - SFGate

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Demonstrators prepare to march in May of 2010 to protest the Arizona Immigration Law. (Scott Olson/Getty Images)

Demonstrators prepare to march in May of 2010 to protest the Arizona Immigration Law. (Scott Olson/Getty Images)

Demonstrators prepare to march in May of 2010 to protest the... Photo-3736711.52453 - SFGate

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Judy Schulz, front, cheers as her husband Richard Schulz, left, both of Glendale, Ariz., as they joined hundreds supporting Arizona's new law on illegal immigration as they listen to speakers near the capitol Saturday, June 5, 2010, in Phoenix. (AP Photo/Ross D. Franklin) less

Judy Schulz, front, cheers as her husband Richard Schulz, left, both of Glendale, Ariz., as they joined hundreds supporting Arizona's new law on illegal immigration as they listen to speakers near the capitol ... more

Tuulia Lowe protests against SB1070 and immigration deportations Wednesday, April 25, 2012, in San Francisco. Supreme Court justices strongly suggested Wednesday that they are ready to allow Arizona to enforce part of a controversial state law requiring police officers to check the immigration status of people they think are in the country illegally. (AP Photo/Ben Margot) less

Tuulia Lowe protests against SB1070 and immigration deportations Wednesday, April 25, 2012, in San Francisco. Supreme Court justices strongly suggested Wednesday that they are ready to allow Arizona to enforce ... more